方腔内双扩散混合对流非线性格子Boltzmann研究

计算物理 ›› 2016, Vol. 33 ›› Issue (2): 156-162.

方腔内双扩散混合对流非线性格子Boltzmann研究

李贝贝, 王婷婷, 陈建, 徐洪涛, 杨茉

上海理工大学能源与动力工程学院, 上海 200093

收稿日期:2015-03-12 修回日期:2015-06-04 出版日期:2016-03-25 发布日期:2016-03-25
通讯作者: 徐洪涛,副教授,E-mail:htxu@usst.edu.cn
作者简介:李贝贝(1991-),女,河南,硕士研究生,主要从事传热传质及格子Boltzmann方法研究,E-mail:634451894@qq.com
基金资助:
国家自然科学基金（51276117）和上海市科委自然科学基金（12ZR1420900）资助项目

Lattice Boltzmann Study of Nonlinear Characteristics of Double Diffusive Mixed Convection in an Enclosure

LI Beibei, WANG Tingting, CHEN Jian, XU Hongtao, YANG Mo

School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

Received:2015-03-12 Revised:2015-06-04 Online:2016-03-25 Published:2016-03-25

摘要/Abstract

摘要： 采用格子Boltzmann方法对方腔内双扩散混合对流的非线性特性进行数值模拟.发热圆位于方腔中心，流体从方腔左侧底部流进，流出位置分别为顶部右侧、中间和左侧三种情况.结果表明，不同参数下的双扩散混合对流存在稳态定常解、周期性振荡解和非周期性振荡解，监测点速度相图分别表现为最终到达一个点、一个封闭环和没有规律的曲线.

关键词: 方腔, 格子Boltzmann, 双扩散混合对流, 非线性

Abstract: Lattice Boltzmann method is adopted to numerically analyze nonlinear characteristics of double diffusive mixed convection in an enclosure. A heated cylinder is located at center of the enclosure. Fluid flows from an inlet at lower-left wall of enclosure and an outlet is at upper-right,upper-middle and upper-left wall respectively. Simulation results indicate that there are steady stationary solution,periodic and aperiodic oscillatory solutions in double diffusive mixed convection at different parameters. Phase path of velocity of monitoring point finally reaches a point,a closed loop and irregular curves,respectively.

Key words: enclosure, lattice Boltzmann, double diffusive mixed convection, nonlinear characteristics

中图分类号:

TK124

李贝贝, 王婷婷, 陈建, 徐洪涛, 杨茉. 方腔内双扩散混合对流非线性格子Boltzmann研究[J]. 计算物理, 2016, 33(2): 156-162.

LI Beibei, WANG Tingting, CHEN Jian, XU Hongtao, YANG Mo. Lattice Boltzmann Study of Nonlinear Characteristics of Double Diffusive Mixed Convection in an Enclosure[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2016, 33(2): 156-162.

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